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April 24, 1928.

1,667,533 H. G. CARLSON CONCRETE HANGER BLOCK Filed Feb. l0. 1927 2 Sheets-Sheet l April 24, 1928. 1,667,533

H. G. CARLSON CONCRETE HANGER BLOCK Filed Feb. 10. 1927 2 Sheets-Sheet 2 l Patented Apr. 24, 1928.

UNlTEosrATEs PATENT offeree.

HJALMA'E e. CARLSON, OE woECESTEE, MASSACHUSETTS, ASSIGNOETO Eocnwoon SPEINKLEE COMrANY` OE MASSACHUSETTS, OEWOECESTEE, MASSACHUSETTS, A

y CORPORATION or MASSACHUSMT'S.`

CONCRETE HANGEE BLOCK.

` #Application filed February 1o; 1927.

This invention relates to al block adapteil to be embedded in a concrete structure and `having an Opening in the botttoln for use in hanging pipes and otherarticles therefrom by meansrol aheaded support projecting up into the interior of a hanger block.

The principal. objects otl the `invention are to provide a hanger block which can be niade of pressed niet-al instead oit the usual casting,

.lo and have a relatively large fiat bottom 'to furnish sullicient Surface to allow of its bcing safely securedby'an adhesive-to a metal concrete Hoor form; to provide a block of pressed metal having ends Set irinly between the Sides and of such shape as to prevent the entrance of concrete to the nut eavity; to provide perforations in the bottom of the block for receiving nails to tempera@ rily hold it in 'place Ywhile the concrete is being poured around itwhen usedon wooden floor forms; to provide extensions on the sides projecting upwardly `and `pretembly inclined towards each other and` having 'lianges at their upper edges extending outwardly in opposite `directions to firmly an-V chor the block in the concrete; and toavoid all waste by making the original blank in rectangular form and utilizingevery particle ofit.

The invention also involves the method of producing the hanger block and other teatures as will appear below.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a plan of the original blank as cut out for the production of this article;

Fig. 2 is an edge View Showing the forni oi' this blank after the first operation;

Fig. 3 is a` plan o'l" the same;

Fig. bis an end view showing the result ol the next operation in which. the ends are bent up into parallel position;

Fig. 5 is a similar' view showing the result of the next operation;

Fig. 6 :is a plan of the blank shown in Fig. 5;

Figs. 7 and 8 are views ol a blank and an element made therefrom orassembling with the blank above referred to Fig. 9 is an end View showingthe blanks of Figs. 6 and 8 assembled;

Fig. 10 is a Section. thereof on the line .10#10 of Fig, 9;

`this Serial No. 167,182.

. Fig. 1 1 is a view siniilar to Fig. l) showing the next operation; and

Fig. 12 is a Side view of the complete block embedded in concrete and suliporting a hanger.

In Fig. `12, l have shown the complete article embedded in the concrete. It will. be understood that when the concrete is being cast around it on a wooden support the hanger block is held in position by two nails 10 or the like which are driven into a board 11 which constitutes the bottom of the mold for the concrete and is afterwards removed, leaving `the nails projecting out. These nails hold the hanger block temporarily while theconcrete is poured and they have no `iturther Jfunction. Their ends are bent hack out of the way by means ofV a hammer. rlhis block can be used also when the support is metal `,instead of wood. For this purpose the bottom of the blockis made with as large a. Surface as possible to take an adhesive which will holdit untilvthe (.:oncrete has been poured and set. For this purpose thecor ners preferably are made square.`

lt will be seen that a rod 12 shown depending from the hanger block held in position by a nut or the like 13 located within it. I will not describe the details of the hanger block with reference to Fig. 12 but will describe the process of n1anufacture, using the other igures for that purpose.

Fig. 1 shows the original rectangular llat blank. The blank is put in a press and Shaped to the l'orm shown in Figs. 2 and 3. It is provided with two ends 18 bent up at right angles, and preferably has a concave surface 14 across the center. 'lwo pairs ol parallel ribs 1T are also provided and two grooves 15. L.:

The next operatiiiln to bend this blank int-o the form shown in Fig. il, in which the sides 16 are in parallel planes, with the concave body of the blank 14 between them and now constituting the bottom. thereof. At Stage the corners are necessarily rounded.

In the next bending operatiini the concave bottoni lll is forced into a llat condition. As the sides 16 are combined in a die, the extra metal is forced out into the corners which become Square as Shown in Fig. 5. .At the :3a/me time perforations 19 lll() Fig.` 1-1.

are made in the bottom to receive nails to hold the block ona` Wooden support While the concrete is poured.. A hole 21 for admitting the pipe hanger nut into the completed` block is also punched` in the bottom. All this is shown in pl'an in Fig.` (3L New a 'rectangular-blank QOis bent to provide'two end flanges at right angles and inserted in the blank shown in Figs., 5 and G. between the ribs 17, as shown in Figs'. 9 and l0, thus sealing` thetopzand ends; againstJ the entrance of concrete.

Newk the blank is pgut iniothen dies and the sides 16 bent toward eachother asshown in 4 The groves V15 weaken the walls so that they will bend along`r those lines andx not unduly compress or deform the piece 2.05

The side walls 16. with the top edges of thev ends 1S converge to form a concrete Wedge between them. which aids to. hold the block therein. This permits a solid body oi concrete, integral with theconcrete structure, to extendI through the hanger block and thus anchorI it. The flanges 18' project out oppositely into the concretey to prevent any tendency of the block` to pull away. The bottoni is flat and, partly trom haring;

- square corners, it furnishes a Wide surface Vwhich can be made to'v adhere to a sheet Y in the construction of the building.

Although I have illustrated. and describedonly oneftor'm` of theinyention I am;` aware of, the fact that changes can-be madey therein,

byv any person Skilled in they art Without departing'from the scope of the invention as expressed in the claims. Theretme l do not` Wish to be limited to the exact torni shown, but what I do claim is l. As, an article of manufacture, a hanger block, adapted to be embedded in concrete, comprising a piece of sheet metal haringrl a ilat bottom with an openinpT therethrough for a fastening device, and a second sheet metal member bent into a U-shape and lo cated entirely Within the first member with its-,end edges restingV on said bottom to close the space in the block, the two sides integral with the bottom projecting upwardly and en- Compassingg` the second nienlber and. haring means, located entirely between the ends. for preventing;- the U-shaped member 'from moving to either end of the outer sheet metal piece, and project-ing upwardly from the top oi said second member and inwardly just at the top thereol`- to hold it securely in place and provided 'with anchoring.:` ll'eatures.

2. As an article of manufacture. a hanger block, adapted to bev embedded incoueron-f. comprisinga piece ot pressed metal havin;Y a: flat bottom withA an opening tlierethrmurh for a fastening` device, and a second sheet metal member bent into a l.l.-sl1ape with its end edges resting` on said; bottom to` close the spa-ce in thel block, the tiro sides integral With the bottom projecting' upwardly and encompassingv the second member and provided With integral vertical ribs near the ends to hold the second member inplace and projecting;- upwardly from the top ot said second member at oppositeyi'.u-linationsI and provided,` With inclined (li-verf;inel llangres to anchor the block in the concrete.

In testimony whereof I lia-ve hereunto aiiiXed my sig-nature.

HJALMAR G. CARLSON.

(i li (lll 

